Ettiotace



N. W. TAPLIN. FURNACE.

Patentqd Dec. 12, 1922.

III"

IVE c1] T4 72 11 171 I Z 5, W. 4m 2 41': .5770 1 y FURNACE.

Application filed February 26, 1921. Serial no. 447,938.

To all whom it may concern:

Be it known that I, NEAL W. TAPLIN, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in Furnaces, of which the following is a specification.

The present invention relates to furnaces; and its object is to provide an improved furnace whereby a high degree of combustion of the fuel therein may be attained; and further, to provide a furnace having an airsupplying channel in one member thereof, such member and channelbeing so formed that said member shall be securely supported on the furnaces lower member, and in such manner as shall prevent deforming by the extreme heat developed in the furnace; and further, to provide simple and efficient means for supplying air to and through said channel for the purpose of efiecting a high degree of combustion.

These and any other objects hereinafter appearing are attained by, and the invention finds preferable embodiment in, the structure hereinafter particularly described and illustrated by the accompanying drawings, in which Figure 1 is a sectional view of portions of a furnace taken on vertical planes corresponding to line 1-1 of Figure 2;

Figure 2 is a sectional view of the same taken on a horizontal plane corresponding to line 2-2 of Figure 1;

Figure 3 is a sectional view of a part of the same taken on a vertical plane corresponding to line 33 of Figure 2;

Figure at is a view in perspective of the upper one of a pair of platesforming airsupplying conduits leading to the interior of the furnace;

Figure 5 isa like view of the lower one of said plates; and.

Figure 6 is a sectional view of certain parts, somewhat enlarged and showing a modified construction.

In the embodiment of the invention chosen for illustration by the drawings and for detailed description in the body of this specification, the furnace comprises a hollow lower member 1 constituting the fire pot of the furnace, and a hollow upper member 2 constituting the combustion chamber (or a part thereof) of the furnace. The upper member 2 has in its lower edge-portion an air-supplying channel 3, curved or arcuate in a horizontal plane conformably with the contour of the furnace, and having inner and outer curved walls 4, 5 formed or cast integral with "said member 52 itself. These walls, thus spaced apart to form the channel 3 between them, each rest at their bottom edges on and are supported by thefuppe'r edge-portion 6 of the lower member 1. This lower members said upper edge-portion is curved in a horizontal plane in registration with the lower edge-portion of the upper member 2 and has a curved or arcuate groove 7 registering with the lower edge of the outer wall 5 of the air-channel 3, and a similar curvedor arcuate rabbet 8 registering with the lower edge of the inner wall 4 of said air-channel, said outer wall being seated in the groove and said inner wall being seated in the rabbet. It will be seen that the upper memberQ isthus securely supported on the lower member 1 at points spaced apart in radial directions; and also, that inasmuch as the outer wall 5 is seated in the groove 7 and the inner wall a is seated in the rabbet 8, the outer wall is held against lateral move ment in either direction and the inner wall against such movement outwardly. Thus thewalls of the air-channel 3 and the members 1 and 2 themselves are so interrelatively held as to be prevented from distortion or deformation caused by extreme degrees of heat.

Theihner wall 4: of the air-supplying channel 3 has air passages9 therethrough and spaced apart as shown whereby air passes to the interior of the furnace to promote combustion. This air-supplying channel 3 is open at both ends 10, lland air is supplied thereto through air-conduits 12, 13 respectively. These are conveniently formed by two horizontally disposed plates 14, 15. spaced apart and located adjacent the dooropening or fuel-supply opening 16 of the furnace and at the bottom thereof, said opening having the door or closure 17 having a hollow-portion 18. One of these plates, as the upper plate 14, has ,a rib 19 adjacent its inner edge projecting downwardly into contact with the lower plate 15, and has also a second rib 20 extending forwardly fromthe rib 19 and likewise projecting downwardly into contact with the lower plate, to form the pair of air-supplying conduits 12, 13, separated by the rib 20, so that part of the air received from outside the furnace is directed through conduit 13 and through the opening 21 at the inner ends of the contacting ribs 22, 23 carried by the upper and lower plates respectively, and into the righ hand open end 11 of the air-channel 3, while the other part of the air supplied to the furnace passes through the opening 24 at the inner ends of the other contacting ribs 25,

26 carried by the upper and lower plates respectively and into the left-hand open end 10 of said air-channel. It will be seen that the air is thus admitted to the interior of the furnace at spaced apart points or passages 9 instead of being all admitted at one point in the circumference of the combustion chamber. To more perfectly eflect his end, the cross-sectional area of the passages 9, especially those nearer the open ends of the air-channel 3 are so related to the cross-sectional area of the airpassage 3 itself as to force a portion of the air therein to seek outlet through other passages 9 spaced further and further from the channels open ends.

The lower plate 15 is provided with a downwardly extending retaining rib 30 seated in the groove 7, and the upper plate 14 resting on the upper edge of the ribs 31 of the lower plate is secured thereto by bolts (not shown) passing through orifices 32, 33 in the plates respectively.

In Figure 6 is shown a modified construction in which the air passages 9 are open at their bottoms.

The invention being intended to be pointed out in the claims, is not to be limited to or by details construction of the particular embodiment thereof illustrated by the drawings or herc-inbefore described.

I claim:

l. lln a furnace; a hollow lower member constituting the furnaces fire pot and having a curved groove in its upper edge-portion; a hollow upper member having an airsupplying channel in its lower edge-portion with outer and inner walls formed integral with said upper member, one of said walls being seated in said groove and the other being supported on the lower inembers upper edge-portion and said inner wall having spaced air passages therethrough leading to the interior of the furnace.

2. ln a furnace; a hollowupper member having an air-supplying channel in its lower eer e-portion with outer and inner curved walls formed integral with said upper member, said inner wall haw "1g spaced air passages therethrough leading to the interior or the furna e; a hollow lower member constituting the furnaces fire pot and having in H he furnaces fire pot; a hollow ember having an air-supplying i it. ower edge-portion with outer WtLliS termed integral with said ne'znber and severally supported on r :neoibers upper edge-portion and wall havii spaced air passages ough leading b0 the interior of the nember having an airl in its lower edge-portion ier walls and being open l walls being seated in othe' being supported rs upper edge-portion having spaced air pasleading to the interior pair of horizontally distes spaced apart to form r-s p )lying conduits leading ends respectively of said aircl), nnel one of said plates having rib seated in said groove. lurnace; a hollow lower member he furuaces fire pot and hav- "l groove in its upper edge-porow upper member having an airg channel in its lower edgeportion outer and inner walls and'being open ends. on of said walls being seated in groove a -d the other being supported he lower members upper edge-portion wall having spaced air pas 11 leading to the interior furnace; a pair of horizontally disposed oacednpart plates. one of said plates ha rib ad acent its inner edge project- 1 f the other plate and a second rib lv and rearwardly and toward said other plate to form air-supplying conduits leading n channel. 1 a furnace; a hollow lower member curved groove and a horizontall" .7 ding ledge in its upper edge portion; hollow upper member having an air-sup channel in its lower edgeportiou outer and "iner walls formed integral mber, the outer wall beroove and theinner wall on said ledge and having "es therethrough leading to ,e furnace.

a hollow lower member 7 upper edge portion curved air a horizontally-extending ledge nace; a hollow lower member ends respectively of the air- 1,438,4=O9 I a with an upward extension; a hollow upper movement by said extension and having member having an air-supplying channel spaced air passages therethrough leading to in its lower edge-portion with outer and the interior of the furnace.

inner walls formed integral with said upper In testimony whereof I have hereunto set groove and the inner wall being supported 16th day of February, 1921. on said ledge and held against outward NEAL W.TAPLIN.

a member, the outer wall being seated in said my hand at Grand Rapids, Michigan, this 

